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Specifications
 

Samsung Galaxy A51

Samsung Galaxy S6

Full Differences
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Samsung Galaxy A51
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Samsung Galaxy A51

Samsung Galaxy S6

Network
Technology GSM / HSPA / LTE GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
  HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26
  2, 4, 5, 12, 13, 25, 26, 41, 66, 71 - SM-A515U
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps
Launch
Announced 2019, December 12 2015, March 01. Released 2015, April
Status Available. Released 2019, December 16 Discontinued
Body
Dimensions 158.5 x 73.6 x 7.9 mm (6.24 x 2.90 x 0.31 in) 143.4 x 70.5 x 6.8 mm (5.65 x 2.78 x 0.27 in)
3D size compare
Weight 172 g (6.07 oz) 138 g (4.87 oz)
Build Glass front (Gorilla Glass 3), plastic back, plastic frame Glass front (Gorilla Glass 4), glass back (Gorilla Glass 4), aluminum frame
SIM Nano-SIM
Nano-SIM + Nano-SIM
Nano-SIM
Display
Type Super AMOLED Super AMOLED
Size 6.5 inches, 102.0 cm2 (~87.4% screen-to-body ratio) 5.1 inches, 71.5 cm2 (~70.7% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~405 ppi density) 1440 x 2560 pixels, 16:9 ratio (~577 ppi density)
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 4
Platform
OS Android 10, upgradable to Android 13, One UI 5 Android 5.0.2 (Lollipop), upgradable to Android 8.0 (Oreo), TouchWiz UI
Chipset Exynos 9611 (10 nm) Exynos 7420 Octa (14 nm)
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (4x2.1 GHz Cortex-A57 & 4x1.5 GHz Cortex-A53)
GPU Mali-G72 MP3 Mali-T760MP8
Memory
Card slot microSDXC (dedicated slot) No
Internal 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 32GB 3GB RAM, 64GB 3GB RAM, 128GB 3GB RAM
 UFS 2.0 UFS 2.0
Main Camera
Modules 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
12 MP, f/2.2, 123˚ (ultrawide)
5 MP, f/2.4, (macro)
5 MP, f/2.2, (depth)
16 MP, f/1.9, 28mm (wide), 1/2.6", 1.12µm, AF, OIS
Features LED flash, panorama, HDR LED flash, auto-HDR, panorama
Video 4K@30fps, 1080p@30/120fps; gyro-EIS 4K@30fps, 1080p@30/60fps, 720p@120fps, HDR, stereo sound rec., OIS, gyro-EIS
Selfie Camera
Modules 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm 5 MP, f/1.9, 22mm (wide), 1/4.1", 1.34µm
Features HDR HDR
Video 4K@30fps, 1080p@30fps 1440p@30fps
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Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
  24-bit/192kHz audio
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth 5.0, A2DP, LE 4.1, A2DP, LE, aptX
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS
NFC Yes Yes
Infrared port No Yes
Radio FM radio No
USB USB Type-C 2.0, OTG microUSB 2.0, OTG
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2
 Virtual proximity sensing
ANT+
ANT+
S-Voice natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
Battery
Type Li-Po 4000 mAh, non-removable Li-Ion 2550 mAh, non-removable
Charging 15W wired 15W wired
Wireless (Qi) (market dependent)
Talk time Up to 17 h (3G)
Music play Up to 49 h
Misc
Colors Prism Crush Black, Prism Crush White, Prism Crush Blue, Prism Crush Pink White Pearl, Black Sapphire, Gold Platinum, Blue Topaz
SAR 0.80 W/kg (head)     0.67 W/kg (body)     1.15 W/kg (head)     1.16 W/kg (body)    
SAR EU 0.37 W/kg (head)     1.59 W/kg (body)     0.38 W/kg (head)     0.50 W/kg (body)    
Models SM-A515F, SM-A515F/DSN, SM-A515F/DS, SM-A515F/DST, SM-A515F/DSM, SM-A515F/N, SM-A515U, SM-A515U1, SM-A515W, SM-A515X, SM-S515DL SM-G9200, SM-G9208, SM-G9208/SS, SM-G9209, SM-G920A, SM-G920F, SM-G920FD, SM-G920I, SM-G920S, SM-G920T, SM-G920K, SC-05G, SM-G920L, SM-G920, SM-G920R7
Price $ 126.90 / C$ 205.00 / £ 80.00 / € 165.00 About 240 EUR
Tests
Performance AnTuTu: 113051 (v7), 175363 (v8)
GeekBench: 5401 (v4.4), 1294 (v5.1)
GFXBench: 5.6fps (ES 3.1 onscreen)
Basemark OS II 2.0: 1641
Basemark X: 22752
Display 636 nits max brightness (measured) Contrast ratio: Infinite (nominal), 4.124 (sunlight)
Camera Compare PHOTO / Compare VIDEO
Loudspeaker -28.6 LUFS (Average) Voice 68dB / Noise 66dB / Ring 73dB
Audio quality Noise -93.1dB / Crosstalk -87.3dB Noise -95.6dB / Crosstalk -94.5dB
Battery (old) Endurance rating 86h Endurance rating 73h

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